Either CS (coordinate system) could be used with equal justification. The two sentences: the sun is at rest and the earth moves, or the sun moves and the earth is at rest, would simply mean two different conventions concerning two different CS

It is my inner conviction that the development of science seeks in the main to satisfy the longing for pure knowledge.

Never let yourself be seduced by any problem, no matter how difficult.

Persistence is the most powerful force on earth, it can move mountains.

The beauty of it is that we have to content ourselves with the recognition of the miracle, beyond which there is no legitimate way out.

The world is a dangerous place to live; not because of the people who are evil, but because of the people who don't do anything about it.

Overpopulation in various countries has become a serious threat to the health of people and a grave obstacle to any attempt to organise peace on this planet